// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.tools;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.Bounds;
/**
* Parses a Geo URL (as specified in RFC 5870) into {@link Bounds}.
*/
public final class GeoUrlToBounds {
public static final Pattern PATTERN = Pattern.compile("geo:(?[+-]?[0-9.]+),(?[+-]?[0-9.]+)(\\?z=(?[0-9]+))?");
private GeoUrlToBounds() {
// Hide default constructor for utils classes
}
/**
* Parses a Geo URL (as specified in RFC 5870) into {@link Bounds}.
* @param url the URL to be parsed
* @return the parsed {@link Bounds}
*/
public static Bounds parse(final String url) {
CheckParameterUtil.ensureParameterNotNull(url, "url");
final Matcher m = PATTERN.matcher(url);
if (m.matches()) {
final double lat;
final double lon;
final int zoom;
try {
lat = Double.parseDouble(m.group("lat"));
} catch (NumberFormatException e) {
Main.warn(tr("URL does not contain valid {0}", tr("latitude")), e);
return null;
}
try {
lon = Double.parseDouble(m.group("lon"));
} catch (NumberFormatException e) {
Main.warn(tr("URL does not contain valid {0}", tr("longitude")), e);
return null;
}
try {
zoom = m.group("zoom") != null ? Integer.parseInt(m.group("zoom")) : 18;
} catch (NumberFormatException e) {
Main.warn(tr("URL does not contain valid {0}", tr("zoom")), e);
return null;
}
return OsmUrlToBounds.positionToBounds(lat, lon, zoom);
} else {
return null;
}
}
}